The panel reads: 'D i in opo ion '. It also show a dotted image and the number 4. It is believed that several letters are missing in this panel. After filling in the gaps we can read 'De Divina Proportione'
Not the easiest easter egg to find. It will require you to collect all rings of fire while being airbourne. After the last ring you should head up and backwards to acces a higher hidden path.
The panel reads 'De Divina Proportione' a famous book on mathematics written by Luca Pacioli around 1497 in Milan. Today only two versions of the original manuscript are believed still to exist. The subject was mathematical and artistic proportions, and the book was illustrated by Leonardo da Vinci.
The book consist of 3 individual manuscripts. The first part, Compendio Divina Proportione, studies and describes the Golden ratio from a mathematical point of view and also studies polygons. The work also discusses the use of perspective by painters such as Piero della Francesca, Melozzo da Forlì, and Marco Palmezzano.
The third part, Libellus in tres partiales tractatus divisus, is mainly an Italian translation of Piero della Francesca's Latin writings On [the] Five Regular Solids ("De quinque corporibus regularibus") and mathematical examples.
This easter egg can be linked to several others found in the game, we refer to the 'summary of significant easter eggs' page for an in depth analysis.
This section is reserved for Confirmation/comments about this investigation. Investigations will remain open until advised by Redlynx that the final solution for each secret is found.